Use the following information for the next five questions: five spines (s), smooth fruit (t), and...
Use the following information for the next five questions: five
spines (s), smooth fruit (t), and uniform fruit color (u) are three
recessive traits in cucumbers and the genes for these traits are
linked on the same chromosome. A cucumber plant heterozygous for
all three genes is used in a test-cross, and the following progeny
are obtained:
SUT 2
suT 21
SuT 70
sut 4
SUt 21
sUt 82
sUT 13
Sut 17
Total: 230
1. What are the order of the genes?
2. Using the information in question 1, above, the map distance between the S and U gene is?
3.Using the data from question 1, above, what is the linkage between the U and T genes?
4.Using the data in question 1 above, what is the linkage between the S and T genes?
5.A gamete genotype that results from a double cross-over is?
Homework Answers
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Use the following information for the next five questions: five
spines (s), smooth fruit (t), and...
6. Fine spines (s), smooth fruit (tu), and uniform color (u) are three recessive traits in...
6. Fine spines (s), smooth fruit (tu), and uniform color (u) are three recessive traits in cucumbers. These genes are linked on the same chromosome. A cucumber plant heterozygous for all three traits is used in the testcross, and the following offspring are obtained: SU CCCCCC Reuuuna a) Determine the order of the genes on the chromosome. b) Calculate the map distances between the genes. c) Calculate the coefficient of coincidence and the interference among the genes. total: 230
Help More Triple cross practice! Green fruit (g), hairy stems (h), and quick ripening (4) are...
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More Triple cross practice! Green fruit (g), hairy stems (h), and quick ripening (4) are three recessive traits in tomatoes, the genes of which are linked on the same chromosome. A tomato plant heterozygous for all three traits is used in a testcross, and the following progeny are produced from this testcross: 2. Arbitrary Loci | # Progeny | Correct Loci Order Order 0 lg 50 Total 314 A. Determine the order of these genes on the chromosome. Add...
16.) [16 pts Consider linked genes s, t, and u in an organism. The s, t,...
16.) [16 pts Consider linked genes s, t, and u in an organism. The s, t, and u alleles are recessive to wild type. An Fl triple heterozygote for these genes is test-crossed. Testcross progeny are in the following phenotypic classes: p sutt + + + SU + 352 + u + ( U + 34 + 5 Sut (sl sut as + I SC S7+ 45 so she is 96 + + t S + t S + +...
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6. Fine spines (s), smooth fruit (tu), and uniform color (u) are three recessive traits in cucumbers. These genes are linked on the same chromosome. A cucumber plant heterozygous for all three traits is used in the testcross, and the following offspring are obtained: SU CCCCCC Reuuuna a) Determine the order of the genes on the chromosome. b) Calculate the map distances between the genes. c) Calculate the coefficient of coincidence and the interference among the genes. total: 230
Help
More Triple cross practice! Green fruit (g), hairy stems (h), and quick ripening (4) are three recessive traits in tomatoes, the genes of which are linked on the same chromosome. A tomato plant heterozygous for all three traits is used in a testcross, and the following progeny are produced from this testcross: 2. Arbitrary Loci | # Progeny | Correct Loci Order Order 0 lg 50 Total 314 A. Determine the order of these genes on the chromosome. Add...
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Which of the following is not necessary for a 3-point mapping experiment? One parent must be heterozygous for all alleles One parent must be homozygous recessive for all alleles Phenotypes must clearly reflect the genotype Linkage on the same chromosome Three or more alleles for each genetic loci You are following two recessive traits for yellow colored leaves that are wrinkled. A cross is performed between a plant that has green, smooth leaves that is heterozygous at both loci, with...
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